ARCHIV FOR MATHEMATIK OG NATDRVIDENSKAB. B. XXIII. Nr. 3. 



Contributions to the knowledge 



of the Fresh-water Entomostraca of 



South America, as shown by artificial 



hatching from dried material. 



By G. O. Saks. 



Introduction. 



Our knowledge of the fresh- water Entomostraca of South 

 America has long remained very imperfect, only scattered 

 notes having been given about that part of the fauna. 

 Being anxious to obtain some closer acquaintance with 

 these interesting little animals, and to compare them with 

 those of other parts of the world, I some years ago asked, 

 the well-known zoologist, Dr. H. v. Ihering of Sâo Paulo, 

 Brazil, to procure for me some samples for a study such 

 as this, and at the same time to send me a parcel of dried 

 material for hatching experiments. He most readily com- 

 plied with my request, and sent me several alcoholic sam- 

 ples taken in the neighbourhood of Sâo Paulo, as also some 



1 — Archiv for Math, og Naturv. B. XXIII. Nr. 3. 

 Trykt den 8. Marts 1901. 



